Merida
Mexico
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Merida, Mexico

Scenic spring view of the Santa Ana Church in Merida, Mexico, surrounded by beautiful flowers and palm trees
Scenic spring view of the Santa Ana Church in Merida, Mexico, surrounded by beautiful flowers and palm trees
The last month of the summer, August, is also a hot month in Merida, Mexico, with average temperature varying between 21.3°C (70.3°F) and 34.9°C (94.8°F).

Temperature

In August, the average high-temperature is almost the same as in July - a hot 34.9°C (94.8°F). In Merida, Mexico, the average low-temperature is 21.3°C (70.3°F).

Heat index

In August, the average heat index is evaluated at a life-threatening hot 51.7°C (125.1°F). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like activity, differences in body mass, height, and shape, clothing, and metabolic differences affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in Merida is 73%.

Rainfall

In August, the rain falls for 12.8 days. Throughout August, 140.7mm (5.5") of precipitation is accumulated. In Merida, during the entire year, the rain falls for 86.6 days and collects up to 1036.9mm (40.8") of precipitation.

Daylight

In August, the average length of the day is 12.8h.

Sunshine

The average sunshine in Merida is 8h.

UV index

Months with the highest UV index are April through August, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In August, the average maximum UV index of 12 translate into the following recommendations:
Take all necessary precautions, as unprotected skin can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.

What is the temperature in August in Merida?

The average high-temperature, in August, in Merida, is 34.9°C (94.8°F), while the average low-temperature is 21.3°C (70.3°F). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that factores the actual air temperature with the relative humidity, is evaluated at 51.7°C (125.1°F).

What is the average humidity in August in Merida?

The average relative humidity in August in Merida, Mexico, is 73%.

How much does it rain in Merida in August?

In Merida, in August, during 12.8 rainfall days, 140.7mm (5.5") of precipitation is typically accumulated.

How many hours of daylight does Merida have in August?

In Merida, the average length of the day in August is 12.8h.

How many hours of sunshine does Merida have in August?

In Merida, Mexico, the average sunshine in August is 8h.

When is the highest UV index in Merida?

Months with the highest UV index in Merida, Mexico, are April through August, with an average maximum UV index of 12.

What is the UV index reading in August in Merida?

In August, the average daily maximum UV index is 12. A UV Index estimate of 11, and higher, represents an extreme health threat from unsafe exposure to the Sun's UV rays.
Average temperature in August - Merida, Mexico
  • Average high temperature in August: 34.9°C

The warmest month (with the highest average high temperature) is May (36.3°C).
The month with the lowest average high temperature is December (30.6°C).

  • Average low temperature in August: 21.3°C

The month with the highest average low temperature is May (21.7°C).
The coldest month (with the lowest average low temperature) is January (17.2°C).

Average humidity in August - Merida, Mexico
  • Average humidity in August: 73%

The month with the highest relative humidity is September (76%).
Months with the lowest relative humidity are March and May (63%).

Average rainfall in August - Merida, Mexico
  • Average rainfall in August: 140.7mm

The wettest month (with the highest rainfall) is September (183.1mm).
The driest month (with the lowest rainfall) is March (22.5mm).

Average rainfall days in August - Merida, Mexico
  • Average rainfall days in August: 12.8 days

The month with the highest number of rainy days is September (13.9 days).
The month with the lowest number of rainy days is April (1.9 days).

Average daylight in August / Average sunshine in August - Merida, Mexico
  • Average daylight in August: 12.8h

The month with the longest days is June (Average daylight: 13.4h).
The month with shortest days is December (Average daylight: 10.9h).

  • Average sunshine in August: 8h

The month with most sunshine is May (Average sunshine: 8.8h).
The month with least sunshine is December (Average sunshine: 6.5h).

Average UV index in August - Merida, Mexico
  • Average UV index in August: 12

Months with the highest UV index are April, May, June, July and August (UV index 12).
Months with the lowest UV index are January and December (UV index 7).